RemoveNotificationImpl.java

/* Copyright 2011 Massimo Gengarelli <gengarel@cs.unibo.it>
 * This file is part of Floz Configurator.
 * Floz Configurator is free software: you can redistribute it and/or modify it 
 * under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or 
 * (at your option) any later version.
 *
 * Floz Configurator is distributed in the hope that it will be useful, but 
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 
 * See the GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License 
 * along with Floz Configurator. If not, see http://www.gnu.org/licenses/.
 */

package it.unibo.cs.v2.server;

import java.io.File;

import it.unibo.cs.v2.servlets.RemoveNotification;
import it.unibo.cs.v2.shared.Notification;

import com.google.gwt.user.server.rpc.RemoteServiceServlet;

@SuppressWarnings("serial")
public class RemoveNotificationImpl extends RemoteServiceServlet implements RemoveNotification {

	@Override
	public void removeNotification(Notification n) throws Exception {
		String login = (String) getThreadLocalRequest().getSession().getAttribute("login");
		String home = (String) getThreadLocalRequest().getSession().getAttribute("home");
		
		if (login.equals("") || home.equals(""))
			throw new Exception("Session expired, please refresh the page.");
		
		VirtuaLogger logger = new VirtuaLogger(home, this.getClass().getName());
		logger.log("Removing notification " + n.getFileName());
		
		File notificationFile = new File(getServletContext().getRealPath("users/" + login + "/" + n.getFileName()));
		
		synchronized (this) {
			if (notificationFile.exists()) 
				notificationFile.delete();
			else
				throw new Exception("Notification file not found.");			
		}
		
		logger.log("Removed notification " + n.getFileName());
	}

}